A genius hacker who freely uses his advanced skills. As a child, he once created a virus with the potential to throw the entire world into turmoil. With a sharp tongue that finds fault with anyone, he knows he has a bad pe...

Elder twin brother of the Yatonokami family. He is an orphan in a poor city, raised by adults who oppressed him; thus he hardly trusts anyone. He is careless and tends to find things troublesome, but is devoted and will do...